Oil vs propane – Need help with calculation
Oil $138,690 btu/gal, $3.02 gal, Furnace 75″ efficient
Propane 91,333 btu/gal, $2.75 gal, Furnace 95% efficient
Cost per “delivered” btu is
Oil: (138,690 x.75)/$3.024 = 34,397 btu’s delivered per dollar
Propane: (91,333x.95)/$2.75 = 31,154 btu’s delivered per dollar
So how many gallons of propane equals 1 gallon of oil after allowing for system efficiency?
so you need 1.1 gallons of propane to equal 1 gallon oil, so
Which is about equal to the current cost of a gallon of oil
or is Calc #2 the right one to use?
X(91,333x.95)= (138,690 x.75)
so you need 1.2 gallons of propane to equal 1 gallon oil
Therefore “Delivered btu equilibrium price” is as follows:
So if oil is less than $3.29 gallon it is a lower cost options to burn oil at the propane price of $2.75.
Is this right?
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